Patents Assigned to Evansville Water & Sewer Utility
  • Method and system for treating drinking water
    Patent number: 5314629
    Abstract: The present invention provides a new and improved method for treating drinking water in a drinking water treatment plant that provides for substantial or complete removal of chlorine dioxide and an associated by-product from water when chlorine dioxide is used as an initial disinfectant and/or chemical oxidizing agent. More particularly, the present invention provides a means for decreasing undesirable residual amounts of chlorine dioxide and chlorite ion using ferrous chloride.
    Type: Grant
    Filed: November 6, 1992
    Date of Patent: May 24, 1994
    Assignee: Evansville Water & Sewer Utility
    Inventors: Mark H. Griese, Ronald S. Bialosky